Numerical control movable column boring and milling machine

Abstract

The invention relates to the technical field of movable column boring and milling machines, and particularly discloses a numerical control movable column boring and milling machine which comprises a movable column boring and milling machine base and two guide rails, and the two guide rails are arranged on the left side and the right side of the top end of the movable column boring and milling machine base correspondingly; a motor screw is connected to the front side of the top end of the movable column boring-milling machine base. The front end of the lead screw is locked at the output end of the motor through a coupler, and the rear end of the lead screw is rotatably arranged on the rear side of the movable column boring and milling machine base through a bearing. The device realizes real-time monitoring of the moving precision, the feeding position precision and the feeding speed of the moving column, so that the machining precision and the workpiece quality of a machine tool are remarkably improved, particularly in the machining field with high precision requirements, serious consequences caused by errors are effectively avoided, and meanwhile, the machining precision is improved by timely finding and correcting deviations. And the production cost and the time cost are reduced, the service life of equipment is prolonged, and a more stable and efficient machining solution is brought to the field of machining.

Description

Technical Field

[0001] The invention relates to the technical field of moving column boring and milling machines, in particular to a numerically controlled moving column boring and milling machine. Background Art

[0002] In the field of mechanical processing, the dynamic column boring and milling machine is an important metal cutting equipment, which is widely used in the processing and manufacturing of various complex parts. The dynamic column boring and milling machine in the prior art usually includes a dynamic column that can move along a guide rail, and a boring and milling head is installed on the dynamic column for cutting the workpiece. When this type of machine is running, the dynamic column moves linearly along the guide rail through a driving mechanism to achieve processing at different positions of the workpiece. However, the dynamic column boring and milling machine in the prior art has some obvious defects in practical application.

[0003] On the one hand, the guide rail is the reference for determining the relative position relationship of each component on the machine tool, and is also the reference for the movement of the moving column. However, the guide rail will wear or deform after long-term use, resulting in a decrease in the stability and accuracy of the moving column during movement, which in turn affects the overall accuracy of the machine tool. Traditional moving column boring and milling machines often lack real-time monitoring of these changes, making the machine prone to errors during processing, affecting processing accuracy and workpiece quality. Especially in some high-precision processing fields, such errors may have serious consequences; On the other hand, the lead screw is an important component in the moving column feed system, responsible for converting rotational motion into linear motion. However, as time goes by and the frequency of use increases, the lead screw will inevitably experience wear. This physical change will cause the lead screw pitch to change, resulting in a decrease in the accuracy of the feed system. The change in pitch not only directly affects the accuracy of the moving column feed position, causing the actual size of the workpiece to deviate from the preset value, which not only reduces the product qualification rate, but may also increase production costs and time costs due to frequent adjustments and corrections. In addition, lead screw wear will also cause fluctuations in the moving column feed speed, making the actual feed speed inconsistent with the operating settings. The fixed speed does not match. This speed inconsistency will not only increase the roughness of the processed surface and affect the overall quality of the workpiece, but may also cause additional mechanical stress to the machine tool itself due to the sudden change in acceleration, accelerate the wear of other parts of the machine tool, and shorten the service life of the equipment. Traditional moving column boring and milling machines generally lack a real-time monitoring mechanism for the moving column feed speed and feed accuracy. In the actual processing process, the feed speed and accuracy of the moving column are crucial to ensuring the processing quality. However, due to the lack of effective monitoring methods, traditional equipment often cannot detect and correct deviations in the moving column feed speed or accuracy in time, resulting in unstable processing quality. Summary of the invention

[0004] The object of the present invention is to provide a CNC moving column boring and milling machine to solve the problem of lack of moving column movement accuracy monitoring, feed position accuracy and feed speed monitoring devices in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC dynamic column boring and milling machine, comprising: a dynamic column boring and milling machine base and guide rails, the number of the guide rails is two, and the two guide rails are respectively arranged on the left and right sides of the top end of the dynamic column boring and milling machine base; the motor is screwed to the front side of the top end of the dynamic column boring and milling machine base; the front end of the lead screw is locked to the output end of the motor through a coupling, and the rear end of the lead screw is rotatably arranged on the rear side of the dynamic column boring and milling machine base through a bearing; the number of racks is two, and the front and rear ends of the two racks are respectively arranged on the left and right ends of the front and rear sides of the dynamic column boring and milling machine base, and the vertical surface of the racks is arranged horizontally; the left and right sides of the bottom end of the slide plate are slidable The movable one is sleeved on the outer walls of the two guide rails, the middle part of the bottom end of the slide plate is screwed on the outer wall of the lead screw, and the front and rear ends of the left and right sides of the slide plate are respectively provided with first slide grooves along the front and rear directions; the number of first guide rods is eight, and the eight first guide rods are grouped in twos, divided into four groups, and the front and rear ends of the four groups of first guide rods are respectively arranged at the upper and lower ends of the front and rear sides of the inner cavity of the four first slide grooves; the monitoring mechanism is arranged in the inner cavity of the first slide groove; the first spring is sleeved on the outer wall of the first guide rod, and one end of the first spring is clamped on the inner wall of the first slide groove; the number of positioning cylinders is two, and the two positioning cylinders are respectively arranged in the middle of the left and right sides of the slide plate; the movable column, the movable column is arranged at the top of the slide plate.

[0006] Preferably, in order to drive the horizontal frame to move, the monitoring mechanism includes: a slider, the number of which is four, and the four sliders are grouped into two groups of two. The two groups of sliders are respectively slidably adapted and inserted in the middle of the inner cavity of the four first slide grooves, the slider is slidably sleeved on the outer wall of the first guide rod, and the other end of the first spring is clamped on the outer wall of the slider; one end of the first connecting rod is rotatably arranged on the outer side of the slider through a pin shaft; the number of connecting frames is two, and the front and rear ends of the inner sides of the two connecting frames are respectively rotatably arranged on the other ends of the four first connecting rods through pin shafts; a positioning column is arranged in the middle of the inner side of the connecting frame, and the positioning column can slide The horizontal frame is adapted to be inserted into the inner cavity of the positioning cylinder; the middle part of the inner side of the horizontal frame is rotatably arranged on the outer end of the connecting frame through a pin shaft, the front and rear outer ends of the horizontal frame are provided with driving grooves connected with its inner cavity, the outer wall of the rack passes through the inner cavity of the driving groove, the front and rear inner ends of the horizontal frame and the front and rear inner ends of its inner cavity are provided with second sliding grooves along the left and right directions, the front and rear ends of the inner side of the horizontal frame are provided with telescopic cavities, the front and rear ends of the top of the horizontal frame are provided with first moving grooves connected with the inner cavity of the telescopic cavity along the left and right directions, and the front and rear sides of the bottom end of the horizontal frame are provided with second moving grooves connected with the inner cavity of the telescopic cavity along the left and right directions.

[0007] Preferably, in order to monitor the moving distance of the horizontal frame, the monitoring mechanism also includes: a rotating rod, the bottom end of the rotating rod is rotatably arranged at the bottom end of the inner cavity of the driving groove through a bearing, and the top end of the rotating rod can be rotatably extended out of the top end of the horizontal frame; the gear is sleeved on the outer wall of the rotating rod and locked by a top screw, and the gear and the rack are meshed; the turntable is fixedly sleeved on the top end of the outer wall of the rotating rod; the number of magnet sheets is several, and the several magnet sheets are respectively arranged at the top end of the turntable at equal distances along the circumferential direction; the number of mounting frames is two, and the two mounting frames are respectively arranged at the outer ends of the front and rear sides of the top end of the horizontal frame; the Hall effect sensor is arranged at the top end of the mounting frame, and the position of the Hall effect sensor corresponds to the position of the magnet sheet.

[0008] Preferably, in order to monitor the parallelism of the guide rail and the horizontal frame, the monitoring mechanism also includes: a positive and negative threaded screw, the left and right ends of which are rotatably arranged on the left and right sides of the inner cavity of the second slide groove through bearings; the number of first movable frames is four, and the front and rear sides of the bottom ends of the four first movable frames are slidably adapted and plugged into the left and right sides of the inner cavities of the four second slide grooves, and the first movable frames are screwed to the outer wall of the positive and negative threaded screw; the first proximity switch is arranged in the middle of the top end of the first movable frame, and the first proximity switch and the motor are electrically connected; the second guide rod is arranged on the outer side of the inner cavity of the telescopic cavity; the second spring is sleeved on the outer wall of the second guide rod, and the second spring One end is clamped on the outer side of the inner cavity of the telescopic cavity; the telescopic rod is slidably adapted and inserted in the middle of the inner cavity of the telescopic cavity, the second guide rod is slidably adapted and inserted in the inner cavity of the telescopic rod, and the other end of the second spring is clamped on the outer end of the telescopic rod; the roller is rotatably arranged on the inner end of the telescopic rod, and the outer wall of the roller is in contact with the outer wall of the guide rail; the first sensing block is arranged on the rear side of the top end of the telescopic rod, and the outer wall of the first sensing block can slide through the middle of the inner cavity of the first movable groove, and the position of the first sensing block corresponds to the position of the first proximity switch; the fixed rod is arranged on the rear side of the bottom end of the telescopic rod, and the outer wall of the fixed rod can slide through the middle of the inner cavity of the second movable groove.

[0009] Preferably, in order to monitor the vertical levelness of the front and rear sides of the skateboard, the monitoring mechanism also includes: a second connecting rod, one end of the second connecting rod is rotatably sleeved on the outer wall of the fixed rod located on the rear side through a bearing; one end of the third connecting rod is rotatably sleeved on the outer wall of the fixed rod located on the front side through a bearing, and the other end of the second connecting rod is slidably adapted and inserted into the inner cavity of the third connecting rod, and the left and right sides of the third connecting rod are provided with third sliding grooves along the front-to-back direction, and the inner side of the inner cavity of the third sliding groove is provided with a plurality of slots equidistantly along the front-to-back direction, and the bottom end of the third connecting rod is provided with a third movable groove along the front-to-back direction, and the position of the third movable groove corresponds to the position of the third sliding groove; the second sensing block is arranged in front of the bottom end of the second connecting rod. On the other hand, the outer wall of the second sensing block can slide through the front side of the inner cavity of the third moving groove; the left and right sides of the top of the second moving frame can be slidably adapted and inserted into the inner cavities of the two third sliding grooves, and the tops of the front and rear sides of the second moving frame are provided with extrusion grooves; the third spring is embedded in the inner cavity of the extrusion groove, and one end of the third spring is clamped on the inner wall of the extrusion groove; a part of the card ball is embedded in the inner cavity of the extrusion groove, and the other end of the third spring is clamped on the outer wall of the card ball, and the other part of the card ball extends into the inner cavity of the card groove corresponding to its position; the second proximity switch is arranged in the middle of the bottom end of the second moving frame, the position of the second proximity switch corresponds to the position of the second sensing block, and the second proximity switch and the motor are electrically connected.

[0010] Preferably, scale lines are provided on both the front and rear sides of the horizontal frame and the front and rear sides of its inner cavity, and the positions of the scale lines correspond to the position of the second slide groove.

[0011] Preferably, the length of the card ball extending into the inner cavity of the card slot is smaller than its radius.

[0012] The CNC moving column boring and milling machine proposed by the present invention has the following beneficial effects: 1. The present invention drives the lead screw to rotate by a motor, so that the rotational force generated by the rotation of the lead screw can drive the slide plate to drive the moving column to move, and the power head on the moving column can be used to bore and mill the workpiece.

[0013] 2. The present invention can utilize the slider and the connecting rod to drive the connecting frame to move through the movement of the base, thereby utilizing the connecting frame to drive the horizontal frame to move. Since the first spring pulls the slider to move outward, the slider can be used to pull the connecting rod to drive the connecting frame to move inward, and then the connecting frame can be used to pull the horizontal frame to move inward, thereby ensuring that the gear can always be in stable contact with the rack, thereby ensuring that the horizontal frame will always follow the rack to maintain a horizontal state. When the horizontal frame moves with the skateboard, the cooperation between the gear and the rack will cause the gear to drive the turntable to rotate through the rotating rod, thereby utilizing the rotating turntable to drive the magnet sheet to move circumferentially. The Hall effect sensor is used to monitor the circumferentially moving magnet sheet to detect the moving speed and moving distance of the horizontal frame, thereby reflecting the moving speed and moving distance of the skateboard.

[0014] 3. The present invention can drive the telescopic rod to move through the horizontal frame, thereby prompting the roller to roll along the guide rail. When the guide rail is worn or deformed, the vertical level of the guide rail will change, thereby prompting the telescopic rod to move toward the inner cavity of the telescopic cavity, or move outside the telescopic cavity, thereby prompting the first sensing block to move closer to the first proximity switch. When the first proximity switch senses the first sensing block, the motor stops driving the lead screw to rotate, thereby the slide plate stops driving the moving column to move, thereby preventing the processed workpiece from having a large precision error and damaging the workpiece. When the telescopic rod moves toward the inner cavity of the telescopic cavity or moves outside the telescopic cavity, it will drive the fixed rod to move. The movement of the fixed rod will prompt the second connecting rod and the third connecting rod to be skewed, prompting the second connecting rod to move backward, and then the second connecting rod can be used to drive the second sensing block to move backward and approach the second proximity switch. Until the second proximity switch senses the second sensing block, the motor stops driving the lead screw to rotate, thereby the slide plate stops driving the moving column to move, thereby preventing the processed workpiece from having a large precision error and damaging the workpiece.

[0015] 4. This device realizes real-time monitoring of the moving column accuracy, feed position accuracy and feed speed. This improvement not only significantly improves the machining accuracy and workpiece quality of the machine tool, especially in the field of high-precision machining, but also effectively avoids the serious consequences caused by errors. At the same time, by timely discovering and correcting deviations, it reduces production costs and time costs, extends the service life of the equipment, and brings more stable and efficient processing solutions to the field of mechanical processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 An exploded view of the present invention; Figure 3 This is a schematic diagram of the monitoring organization's structure; Figure 4 Explosion diagram for monitoring agencies; Figure 5 is a schematic structural diagram of the second moving slot; Figure 6 for Figure 2 A magnified image of point A; Figure 7 for Figure 2 A magnified view of point B; Figure 8 for Figure 4 Enlarged view of point C; Fig. 9 for Figure 4 The enlarged view of point D; Fig.10 for Figure 4The enlarged view of point E; Fig.11 for Figure 4 The enlarged view of F; Fig.12 for Figure 5 Enlarged view of point G.

[0017] In the figure: 1, base of moving column boring and milling machine; 2, guide rail; 3, motor; 4, lead screw; 5, rack; 6, monitoring mechanism; 61, slider; 62, first connecting rod; 63, connecting frame; 64, positioning column; 65, horizontal frame; 66, driving slot; 67, second slide slot; 68, first moving slot; 69, second moving slot; 610, rotating rod; 611, gear; 612, turntable; 613, magnet sheet; 614, mounting frame; 615, Hall effect sensor; 616, positive and negative thread screw; 617, scale line; 618, first moving frame; 619, first proximity switch; 620, second guide rod; 621, second spring; 622, telescopic rod; 623, roller; 624, first sensing block; 625, fixed rod; 626, second connecting rod; 627, third connecting rod; 628, third slide groove; 629, clamping groove; 630, third moving groove; 631, second sensing block; 632, second moving frame; 633, extrusion groove; 634, third spring; 635, clamping ball; 636, second proximity switch; 637, telescopic chamber; 7, slide plate; 8, first slide groove; 9, first guide rod; 10, first spring; 11, positioning cylinder; 12, moving column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-12The present invention provides a technical solution for a CNC moving column boring and milling machine, including: a moving column boring and milling machine base 1, a guide rail 2, a motor 3, a lead screw 4, a rack 5, a monitoring mechanism 6, a slide plate 7, a first slide groove 8, a first guide rod 9, a first spring 10, a positioning cylinder 11 and a moving column 12. The number of the guide rails 2 is two, and the two guide rails 2 are respectively arranged on the left and right sides of the top of the moving column boring and milling machine base 1. The guide rails 2 are used to guide the slide plate 7 to slide. The motor 3 is screwed to the front side of the top of the moving column boring and milling machine base 1. The motor 3 is a prior art, and the motor 3 is a servo motor. The motor 3 is connected to a servo controller, which will not be described in detail here. The motor 3 is used to drive the lead screw 4 The front end of the lead screw 4 is locked to the output end of the motor 3 through a coupling, and the rear end of the lead screw 4 is rotatably arranged on the rear side of the movable column boring and milling machine base 1 through a bearing. The rotational force generated by the rotation of the lead screw 4 can prompt the slide plate 7 to move. There are two racks 5, and the front and rear ends of the two racks 5 are respectively arranged on the left and right ends of the front and rear sides of the movable column boring and milling machine base 1. The vertical surface of the rack 5 is horizontally arranged. The rack 5 can ensure that the horizontal frame 65 is always in a horizontal state by being horizontally arranged. The left and right sides of the bottom end of the slide plate 7 can be slidably sleeved on the outer walls of the two guide rails 2 respectively, and the middle part of the bottom end of the slide plate 7 is screwed to the outer wall of the lead screw 4. The left and right sides of the plate 7 are provided with first slide grooves 8 at the front and rear ends along the front and rear directions respectively. The slide plate 7 is used to support the movable column 12 and drive the movable column 12 to move. The number of the first guide rods 9 is eight, and the eight first guide rods 9 are grouped in pairs, divided into four groups. The front and rear ends of the four groups of first guide rods 9 are respectively arranged at the upper and lower ends of the front and rear sides of the inner cavity of the four first slide grooves 8. The first guide rods 9 can prevent the slider 61 from escaping from the inner cavity of the first slide groove 8. The monitoring mechanism 6 is arranged in the inner cavity of the first slide groove 8. The monitoring mechanism 6 is used to monitor the horizontality of the vertical surface of the guide rail, monitor the moving distance and moving speed of the slide plate 7, and monitor the straightness of the side of the slide plate 7. The first spring 1 0 is sleeved on the outer wall of the first guide rod 9, one end of the first spring 10 is clamped on the inner wall of the first slide groove 8, the first spring 10 is a rotation spring, which undergoes elastic deformation after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The first spring 10 is used here to pull the first connecting rod 62 outward, thereby prompting the gear 611 to always mesh with the rack 5. There are two positioning cylinders 11, and the two positioning cylinders 11 are respectively arranged in the middle of the left and right sides of the slide plate 7. The moving column 12 is arranged at the top of the slide plate 7. The moving column 12 is the existing technology. A power head and a boring and milling cutter are arranged on the moving column 12 for boring and milling the workpiece, which will not be elaborated here.

[0020] As a preferred solution, further, the monitoring mechanism 6 includes: a slider 61, a first connecting rod 62, a connecting frame 63, a positioning column 64, a horizontal frame 65, a driving slot 66, a second sliding slot 67, a first moving slot 68, a second moving slot 69, a rotating rod 610, a gear 611, a turntable 612, a magnet sheet 613, a mounting frame 614, a Hall effect sensor 615, a positive and negative threaded screw 616, a scale line 617, a first moving frame 618, a first proximity switch 619, a second guide rod 620, a second spring 621, a telescopic rod 622, a roller 623, a first sensing block 624, a fixing rod 625, a second connecting rod 626, a third connecting rod 627, a third sliding slot 628, a card slot 629, a third moving slot 630, and a second sensing block 6 31, a second movable frame 632, an extrusion groove 633, a third spring 634, a card ball 635, a second proximity switch 636 and a telescopic cavity 637, the number of sliders 61 is four, and the four sliders 61 are each two in a group, divided into two groups, the two groups of sliders 61 are respectively slidably adapted and plugged into the middle of the inner cavity of the four first slide grooves 8, the slider 61 is slidably sleeved on the outer wall of the first guide rod 9, the other end of the first spring 10 is clamped on the outer wall of the slider 61, one end of the first connecting rod 62 is rotatably arranged on the outer side of the slider 61 through a pin shaft, and the first connecting rod 62 is used to pull the connecting frame 63 to move inward, the number of the connecting frames 63 is two, and the inner front and rear ends of the two connecting frames 63 are respectively rotatably arranged on the other end of the four first connecting rods 62 through a pin shaft. The connecting frame 63 is used to pull the horizontal frame 65. The positioning column 64 is arranged at the inner middle part of the connecting frame 63. The positioning column 64 can be slidably adapted and inserted into the inner cavity of the positioning cylinder 11. The positioning column 64 and the positioning cylinder 11 cooperate to ensure that the connecting frame 63 is vertical. The inner middle part of the horizontal frame 65 is rotatably arranged on the outer end of the connecting frame 63 through a pin shaft. The front and rear outer ends of the horizontal frame 65 are provided with a driving groove 66 connected to its inner cavity. The outer wall of the rack 5 passes through the inner cavity of the driving groove 66. The front and rear inner ends of the horizontal frame 65 and the front and rear inner ends of its inner cavity are provided with a second sliding groove 67 along the left and right directions. The inner front and rear ends of the horizontal frame 65 are provided with a telescopic cavity 637. The front and rear ends of the top of the horizontal frame 65 are provided with a telescopic cavity 66 along the left and right directions. 37, the bottom end of the horizontal frame 65 has a first movable groove 68 connected to the inner cavity of the telescopic cavity 637, and the front and rear sides of the bottom end of the horizontal frame 65 are both provided with a second movable groove 69 connected to the inner cavity of the telescopic cavity 637 along the left and right directions. The horizontal frame 65 that always maintains a horizontal state can monitor whether the guide rail 2 is in a horizontal state. The front and rear sides of the horizontal frame 65 are provided with scale lines 617 on the front and rear sides of its inner cavity. The position of the scale line 617 corresponds to the position of the second slide groove 67. The scale line 617 can be used to read the distance from the first proximity switch 619 to the first sensing block 624. The bottom end of the rotating rod 610 is rotatably arranged at the bottom end of the inner cavity of the driving groove 66 through a bearing, and the top end of the rotating rod 610 can be rotatably extended out of the top end of the horizontal frame 65. The gear 611 is sleeved on the outer wall of the rotating rod 610.And locked by the top screw, the gear 611 and the rack 5 are meshed. When the slide 7 moves, the gear 611 and the rack 5 can be used to drive the rotating rod 610 to rotate. The turntable 612 is fixedly sleeved on the top of the outer wall of the rotating rod 610. There are several magnet sheets 613, and several magnet sheets 613 are respectively arranged at the top of the turntable 612 at equal intervals along the circumferential direction. The magnet sheets 613 that move circumferentially can cooperate with the Hall effect sensor 615 to monitor the moving distance and moving position of the slide 7. There are two mounting frames 614, and the two mounting frames 614 are respectively arranged at the outer ends of the front and rear sides of the top of the horizontal frame 65. The Hall effect sensor 615 is arranged at the top of the mounting frame 614. The position of the Hall effect sensor 615 and the magnet sheet 613 corresponds to the position, the Hall effect sensor 615 is a prior art and will not be described in detail here. The circumferentially moving magnet sheet 613 can cooperate with the Hall effect sensor 615 to monitor the moving distance and moving position of the slide plate 7. The left and right ends of the positive and negative threaded screw 616 are rotatably arranged on the left and right sides of the inner cavity of the second slide groove 67 through bearings. The rotation of the positive and negative threaded screw 616 can drive the first moving frames 618 corresponding to the two positions to move closer. There are four first moving frames 618. The front and rear sides of the bottom ends of the four first moving frames 618 can be slidably adapted and plugged into the left and right sides of the inner cavity of the four second slide grooves 67 respectively. The first moving frame 618 is screwed to the outer wall of the positive and negative threaded screw 616. The first proximity switch 619 is set In the middle of the top of the first moving frame 618, the first proximity switch 619 and the motor 3 are electrically connected. The first proximity switch 619 is a prior art and will not be described in detail here. When the first proximity switch 619 detects the first sensing block 624, the motor 3 will be controlled to stop working. The second guide rod 620 is arranged on the outer side of the inner cavity of the telescopic cavity 637. The second spring 621 is sleeved on the outer wall of the second guide rod 620. One end of the second spring 621 is clamped on the outer side of the inner cavity of the telescopic cavity 637. The second spring 621 is a rotary spring. It undergoes elastic deformation after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The second spring 621 is used here to push the telescopic rod 622 to move inward, thereby ensuring that the roller 623 is always in contact with the guide rail 2, and the telescopic cavity 637 is extended. The retracting rod 622 can be slidably adapted and inserted into the middle part of the inner cavity of the telescopic cavity 637, the second guide rod 620 can be slidably adapted and inserted into the inner cavity of the telescopic rod 622, the other end of the second spring 621 is clamped on the outer end of the telescopic rod 622, the roller 623 is rotatably arranged on the inner end of the telescopic rod 622, the outer wall of the roller 623 is in contact with the outer wall of the guide rail 2, the roller 623 can reduce the friction between the telescopic rod 622 and the guide rail 2, the first sensing block 624 is arranged on the rear side of the top end of the telescopic rod 622, the outer wall of the first sensing block 624 can slidably pass through the middle part of the inner cavity of the first moving groove 68, the position of the first sensing block 624 corresponds to the position of the first proximity switch 619, the fixing rod 625 is arranged on the rear side of the bottom end of the telescopic rod 622,The outer wall of the fixed rod 625 can slide through the middle of the inner cavity of the second movable groove 69, one end of the second connecting rod 626 can be rotatably sleeved on the outer wall of the fixed rod 625 located on the rear side through a bearing, one end of the third connecting rod 627 can be rotatably sleeved on the outer wall of the fixed rod 625 located on the front side through a bearing, and the other end of the second connecting rod 626 can be slidably adapted and inserted into the inner cavity of the third connecting rod 627. The left and right sides of the third connecting rod 627 are provided with third sliding grooves 628 along the front-to-back direction, and the inner side of the inner cavity of the third sliding groove 628 is provided with a plurality of slots 629 equidistantly along the front-to-back direction. A third movable groove 630 is provided at the bottom along the front-to-back direction, and the position of the third movable groove 630 corresponds to the position of the third slide groove 628. The two telescopic rods 622 can be connected together through the second connecting rod 626 and the third connecting rod 627. The second sensing block 631 is arranged at the front side of the bottom end of the second connecting rod 626. The outer wall of the second sensing block 631 can slide through the front side of the inner cavity of the third movable groove 630. The left and right sides of the top of the second movable frame 632 can be slidably adapted and plugged into the inner cavities of the two third slide grooves 628. Extrusion grooves 633 are provided at the tops of the front and rear sides of the second movable frame 632. The third spring 634 is embedded in the inner cavity of the extrusion groove 633, and one end of the third spring 634 is clamped on the inner wall of the extrusion groove 633. The third spring 634 is a rotation spring, which undergoes elastic deformation after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The third spring 634 is used to squeeze the card ball 635 into the inner cavity of the card groove 633. A part of the card ball 635 is embedded in the inner cavity of the extrusion groove 633, and the other end of the third spring 634 is clamped on the outer wall of the card ball 635. The other part of the card ball 635 extends into the inner cavity of the card groove 639 corresponding to its position. The cooperation between the card slot 639 can fix the position of the second movable frame 632. The length of the card ball 635 extending into the inner cavity of the card slot 639 is less than its radius, ensuring that the second movable frame 632 can slide. The second proximity switch 636 is set at the middle of the bottom end of the second movable frame 632. The position of the second proximity switch 636 corresponds to the position of the second sensing block 631. The second proximity switch 636 and the motor 3 are electrically connected. The second proximity switch 636 is a prior art and will not be described in detail here. When the second proximity switch 636 detects the second sensing block 631, the motor 3 stops working.

[0021] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0022] When in use, according to the allowable error range of the linearity of the side of the guide rail 2, the positive and negative threaded screw 616 is rotated, and the rotational force generated by the rotation of the positive and negative threaded screw 616 can prompt the two first moving frames 618 in corresponding positions to drive the first proximity switch 619 to move closer, and read the moving position according to the scale line 617 until the two first proximity switches 619 move to a suitable distance, and according to the allowable error range of the linearity of the side of the slide plate 7, the second moving frame 632 is slid along the inner cavity of the third slide groove 628, and the second moving frame 632 slides along the inner cavity of the third slide groove 628, and uses the inner wall of the card slot 629 to squeeze the card ball 635 to move to the inner cavity of the extrusion slot 633, and squeezes the third spring 634 to undergo elastic deformation. Until the card ball 635 is completely out of the inner cavity of the card slot 629, when the second mobile frame 632 drives the second proximity switch 636 to move to a suitable position, the card ball 635 is pushed to move to the inner cavity of the card slot 629 corresponding to its current position under the elastic force of the third spring 634, which is used to fix the position of the second mobile frame 632, start the motor 3, and use the output end of the motor 3 to drive the screw 4 to rotate. The rotation of the screw 4 can prompt the slide plate 7 to drive the moving column 12 to move, and the power head on the moving column 12 can be used to process the workpiece. During the movement of the slide plate 7, the horizontal frame 65 can be driven to move by the slider 61, the first connecting rod 62 and the connecting frame 63. Since the slider 61 is pulled by the first spring 10 The first connecting rod 61 can be used to pull the inner end of the first connecting rod 62 to move outward, and then the first connecting rod 62 can be used to pull the horizontal frame 65 to move inward through the connecting frame 63, so that the gear 611 can be firmly fitted with the rack 5, thereby ensuring that the horizontal frame 65 can always maintain a horizontal state. The movement of the horizontal frame 65 can cause the gear 611 to roll along the rack 5, so that the gear 611 can be used to mobilize the rotating rod 610 to rotate. The rotation of the rotating rod 610 can drive the magnet piece 613 to move in the circumferential direction through the turntable 612, and then the Hall effect sensor 615 can be used to monitor the magnet piece 613 moving in the circumferential direction. The moving distance and speed of the moving column driven by the slide plate 7 can be monitored. By monitoring the slide plate 7 The moving distance can be used to determine the moving position of the slide plate 7, thereby avoiding the deviation of the feeding position and feeding speed of the moving column 12. When the guide rail 2 is used for a period of time and the position is deformed, the side straightness of the guide rail 2 will be reduced, which will cause the accuracy of the slide plate 7 moving along the guide rail 2 to be reduced, resulting in the side straightness of the slide plate 7 being reduced. When the side straightness of the guide rail 2 is reduced, the slide plate 7 moves along the guide rail 2, the side straightness of the slide plate 7 is reduced, and the slide plate 7 tilts forward or backward. Due to the cooperation between the positioning cylinder 11 and the positioning column 64, the connecting frame 63 and the side of the slide plate 7 are always in a vertical state. At the same time, the rack 5 blocks the horizontal frame 65, and the horizontality of the horizontal frame 65 does not change.Then, the connecting frame 63 will be prompted to rotate with the slide plate 7 with the position where the connecting frame 63 and the horizontal frame 65 are connected by the pin as the center. At the same time, the first spring 10 will be used to make the gear 611 always firmly contact and mesh with the rack 5 through the slider 61, the first connecting rod 62 and the connecting frame 63. The horizontal frame 65 that moves with the slide plate 7 can drive the telescopic rod 622 to move. The movement of the telescopic rod 622 can prompt the roller 623 to move along the guide rail 2. When the roller 623 moves to the deformation position of the guide rail 2, the telescopic rod 622 will be pushed to the extension under the pressure of the guide rail 2. The inner cavity of the contraction cavity 637 moves and squeezes the second spring 621 to elastically deform, or the telescopic rod 622 is pushed out of the inner cavity of the telescopic cavity 637 under the elastic force of the second spring 621, so that the roller 623 is always firmly in contact with the guide rail 2. When the position of the telescopic rod 622 changes, the positions of the first sensing block 624 and the fixed rod 625 will change. When the deformation of the guide rail 2 is large, the first sensing block 624 will be urged to move closer to the first proximity switch 619. When the first proximity switch 619 senses the first sensing block 624, the first proximity switch 619 will sense the first sensing block 624. The switch 619 turns off the motor 3 to prevent the workpiece from being processed further, which may result in a large error in the workpiece processing and damage to the workpiece. At the same time, when the error in the front-to-back straightness of the side of the slide plate 7 is large, the fixed rod 625 moves to pull the second connecting rod 626 and the third connecting rod 627, causing the second connecting rod 626 to slide backward along the inner cavity of the third connecting rod 627, thereby driving the second sensing block 631 to move backward, causing the second sensing block 631 to move closer to the second proximity switch 636. When the second proximity switch 636 senses the second sensing block 631, the second proximity switch 636 is turned off. 36 controls to shut down motor 3 to prevent further processing of the workpiece, which results in large processing errors and damage to the workpiece. This device realizes real-time monitoring of the moving column movement accuracy, feed position accuracy and feed speed. This improvement not only significantly improves the processing accuracy and workpiece quality of the machine tool, but also effectively avoids the serious consequences caused by errors, especially in the field of high-precision processing. At the same time, by timely discovering and correcting deviations, it reduces production costs and time costs, extends the service life of the equipment, and brings a more stable and efficient processing solution to the field of mechanical processing.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC moving column boring and milling machine, characterized in that: include: Moving column boring and milling machine base (1); Guide rails (2), the number of the guide rails (2) being two, and the two guide rails (2) being respectively arranged on the left and right sides of the top end of the moving column boring and milling machine base (1); A motor (3), the motor (3) being screw-connected to the front side of the top end of the base (1) of the moving column boring and milling machine; A lead screw (4), the front end of the lead screw (4) being locked to the output end of the motor (3) via a coupling, and the rear end of the lead screw (4) being rotatably arranged on the rear side of the movable column boring and milling machine base (1) via a bearing; Racks (5), the number of the racks (5) is two, the front and rear ends of the two racks (5) are respectively arranged at the front and rear sides and the left and right ends of the base (1) of the moving column boring and milling machine, and the vertical surface of the racks (5) is arranged horizontally; A slide plate (7), wherein the left and right sides of the bottom end of the slide plate (7) are respectively slidably sleeved on the outer walls of the two guide rails (2), the middle part of the bottom end of the slide plate (7) is screwed to the outer wall of the lead screw (4), and the left and right sides of the slide plate (7) are respectively provided with first slide grooves (8) along the front-back direction at the front and rear ends; First guide rods (9), the number of the first guide rods (9) is eight, the eight first guide rods (9) are grouped in pairs, and are divided into four groups, the front and rear ends of the four groups of first guide rods (9) are respectively arranged at the front and rear sides and the upper and lower ends of the inner cavities of the four first slide grooves (8); A monitoring mechanism (6), wherein the monitoring mechanism (6) is arranged in the inner cavity of the first chute (8); a first spring (10), wherein the first spring (10) is sleeved on the outer wall of the first guide rod (9), and one end of the first spring (10) is clamped on the inner wall of the first sliding groove (8); Positioning cylinders (11), the number of the positioning cylinders (11) being two, and the two positioning cylinders (11) being respectively arranged at the middle of the left and right sides of the slide plate (7); A moving column (12), wherein the moving column (12) is arranged at the top end of the slide plate (7).

2. A CNC moving column boring and milling machine according to claim 1, characterized in that: The monitoring mechanism (6) comprises: Slide blocks (61), the number of the slide blocks (61) is four, and the four slide blocks (61) are divided into two groups, with two of each group forming a group. The two groups of slide blocks (61) are respectively slidably adapted and plugged into the middle of the inner cavities of the four first slide grooves (8), the slide blocks (61) are slidably sleeved on the outer wall of the first guide rod (9), and the other end of the first spring (10) is clamped on the outer wall of the slide block (61); A first connecting rod (62), one end of the first connecting rod (62) being rotatably disposed on the outer side of the sliding block (61) via a pin; A connecting frame (63), wherein the number of the connecting frames (63) is two, and the inner front and rear ends of the two connecting frames (63) are rotatably arranged on the other ends of the four first connecting rods (62) via pins; A positioning column (64), the positioning column (64) being arranged at the middle portion of the inner side of the connecting frame (63), the positioning column (64) being slidably adapted to be inserted into the inner cavity of the positioning cylinder (11); A horizontal frame (65), wherein the middle portion of the inner side of the horizontal frame (65) is rotatably arranged on the outer end of the connecting frame (63) through a pin shaft, the outer ends of the front and rear sides of the horizontal frame (65) are each provided with a driving groove (66) connected to the inner cavity thereof, the outer wall of the rack (5) passes through the inner cavity of the driving groove (66), the inner ends of the front and rear sides of the horizontal frame (65) and the inner ends of the front and rear sides of the inner cavity thereof are each provided with a second sliding groove (67) along the left and right direction, the inner front and rear ends of the horizontal frame (65) are each provided with a telescopic cavity (637), the front and rear sides of the top end of the horizontal frame (65) are each provided with a first moving groove (68) connected to the inner cavity of the telescopic cavity (637) along the left and right direction, and the front and rear sides of the bottom end of the horizontal frame (65) are each provided with a second moving groove (69) connected to the inner cavity of the telescopic cavity (637) along the left and right direction.

3. A CNC moving column boring and milling machine according to claim 2, characterized in that: The monitoring mechanism (6) further comprises: A rotating rod (610), the bottom end of the rotating rod (610) being rotatably disposed at the bottom end of the inner cavity of the driving groove (66) via a bearing, and the top end of the rotating rod (610) being rotatably extended out of the top end of the horizontal frame (65); A gear (611), wherein the gear (611) is sleeved on the outer wall of the rotating rod (610) and is locked by a top screw, and the gear (611) is meshed with the rack (5); A rotating disk (612), wherein the rotating disk (612) is fixedly sleeved on the top end of the outer wall of the rotating rod (610); Magnet pieces (613), the number of the magnet pieces (613) being multiple, and the multiple magnet pieces (613) being arranged at equal intervals along the circumferential direction at the top of the rotating disk (612); A mounting frame (614), wherein the number of the mounting frames (614) is two, and the two mounting frames (614) are respectively arranged at the outer ends of the front and rear sides of the top of the horizontal frame (65); A Hall effect sensor (615) is arranged at the top of the mounting frame (614), and the position of the Hall effect sensor (615) corresponds to the position of the magnet sheet (613).

4. A CNC moving column boring and milling machine according to claim 3, characterized in that: The monitoring mechanism (6) further comprises: A forward and reverse threaded screw (616), wherein left and right ends of the forward and reverse threaded screw (616) are rotatably disposed on left and right sides of the inner cavity of the second slide groove (67) via bearings; A first movable frame (618), the number of the first movable frames (618) is four, the front and rear sides of the bottom ends of the four first movable frames (618) are respectively slidably adapted to be inserted into the left and right sides of the inner cavities of the four second slide grooves (67), and the first movable frames (618) are screwed to the outer wall of the positive and negative thread screw (616); A first proximity switch (619), the first proximity switch (619) being disposed at the middle of the top end of the first movable frame (618), the first proximity switch (619) being electrically connected to the motor (3); A second guide rod (620), the second guide rod (620) being arranged outside the inner cavity of the telescopic cavity (637); a second spring (621), wherein the second spring (621) is sleeved on an outer wall of the second guide rod (620), and one end of the second spring (621) is clamped on the outer side of the inner cavity of the telescopic cavity (637); The telescopic rod (622) is slidably adapted to be inserted into the middle of the inner cavity of the telescopic cavity (637), the second guide rod (620) is slidably adapted to be inserted into the inner cavity of the telescopic rod (622), and the other end of the second spring (621) is clamped to the outer end of the telescopic rod (622); A roller (623), the roller (623) being rotatably disposed on the inner end of the telescopic rod (622), the outer wall of the roller (623) being in contact with the outer wall of the guide rail (2); A first sensing block (624), the first sensing block (624) being arranged at the rear side of the top end of the telescopic rod (622), the outer wall of the first sensing block (624) being slidable through the middle of the inner cavity of the first movable groove (68), the position of the first sensing block (624) corresponding to the position of the first proximity switch (619); A fixed rod (625) is arranged at the rear side of the bottom end of the telescopic rod (622), and the outer wall of the fixed rod (625) can slidably penetrate the middle part of the inner cavity of the second movable groove (69).

5. A CNC moving column boring and milling machine according to claim 4, characterized in that: The monitoring mechanism (6) further comprises: A second connecting rod (626), one end of the second connecting rod (626) being rotatably sleeved on the outer wall of the fixed rod (625) located at the rear side via a bearing; A third connecting rod (627), one end of the third connecting rod (627) is rotatably sleeved on the outer wall of the fixed rod (625) located on the front side through a bearing, the other end of the second connecting rod (626) is slidably adapted to be inserted into the inner cavity of the third connecting rod (627), the left and right sides of the third connecting rod (627) are provided with third sliding grooves (628) along the front-to-back direction, the inner side of the inner cavity of the third sliding groove (628) is provided with a plurality of slots (629) equidistantly along the front-to-back direction, the bottom end of the third connecting rod (627) is provided with a third movable groove (630) along the front-to-back direction, and the position of the third movable groove (630) corresponds to the position of the third sliding groove (628); A second sensing block (631), the second sensing block (631) being arranged at the front side of the bottom end of the second connecting rod (626), and the outer wall of the second sensing block (631) being slidable through the front side of the inner cavity of the third movable groove (630); A second movable frame (632), the left and right sides of the top of the second movable frame (632) are respectively slidably adapted to be inserted into the inner cavities of the two third slide grooves (628), and the tops of the front and rear sides of the second movable frame (632) are both provided with extrusion grooves (633); a third spring (634), the third spring (634) being embedded in the inner cavity of the extrusion groove (633), and one end of the third spring (634) being clamped on the inner wall of the extrusion groove (633); A locking ball (635), a portion of which is embedded in the inner cavity of the extrusion groove (633), the other end of the third spring (634) is locked to the outer wall of the locking ball (635), and the other portion of the locking ball (635) extends into the inner cavity of the locking groove (639) corresponding to its position; A second proximity switch (636), the second proximity switch (636) is arranged at the middle of the bottom end of the second movable frame (632), the position of the second proximity switch (636) corresponds to the position of the second sensing block (631), and the second proximity switch (636) and the motor (3) are electrically connected.

6. A CNC moving column boring and milling machine according to claim 5, characterized in that: The front and rear sides of the horizontal frame (65) and the front and rear sides of its inner cavity are both provided with scale lines (617), and the positions of the scale lines (617) correspond to the positions of the second slide grooves (67).

7. A CNC moving column boring and milling machine according to claim 6, characterized in that: The length of the locking ball (635) extending into the inner cavity of the locking groove (639) is less than its radius.

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